OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
OPTEK Technology Inc. — 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com
Issue A 04/2012
Page 1 of 5
Plastic Infrared Emitting Diode
OP140, OP145 Series
Description:
Each device in this series is a high intensity gallium arsenide infrared emitting diode that is suited for use as a
PCBoard mounted slotted switch or an easy mount PCBoard interrupter.
Each OP140 (A, B, C, D) and OP145 (A, B, C, D) device is a domed-lens 935 nm diode that is molded in an IR-
transmissive plastic side-looking package.
OP140 is mechanically and spectrally matched to the OP550 series of phototransistors and the OP560 series of
photodarlingtons. OP145 is mechanically and spectrally matched to the OP555 and OP565 series devices.
Please refer to Application Bulletins 208 and 210 for additional design information and reliability (degradation) data.
Features:
• IR-transmissive plastic package
• Side-looking package for space-limited applications
• Wide irradiance pattern
• Mechanically and spectrally matched to other OPTEK products
Applications:
• Space-limited applications
• PCBoard mounted slotted switch
• PCBoard interrupter
Ordering Information
Part
Number LED Peak
Wavelength Lens
Type Total Beam
Angle Lead
Length
OP140A
935 nm Domed 40° min of
0.50"
OP140B
OP140C
OP140D
OP145A
OP145B
OP145C
OP145D
RoHS
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
OPTEK Technology Inc. — 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com
Issue A 04/2012
Page 2 of 5
Plastic Infrared Emitting Diode
OP140, OP145 Series
OP145 (A, B, C, D)
OP140 (A, B, C, D)
2
1
2
1
CONTAINS POLYSULFONE
To avoid stress cracking, we suggest using
ND Industries’ Vibra-Tite for thread-locking.
Vibra-Tite evaporates fast without causing structural
failure in OPTEK'S molded plastics.
Pin # LED
1 Cathode
2 Anode
Sensor
Emitter/Anode
Collector/Cathode
Pin # LED
1 Cathode
2 Anode
Sensor
Emitter/Anode
Collector/Cathode
INCHES
[MILLIMETERS]
DIMENSIONS ARE IN:
INCHES
[MILLIMETERS]
DIMENSIONS ARE IN:
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
OPTEK Technology Inc. — 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com
Issue A 04/2012
Page 3 of 5
Plastic Infrared Emitting Diode
OP140, OP145 Series
Absolute Maximum Ratings (TA=25°C unless otherwise noted)
Storage and Operating Temperature Range -40o C to +100o C
Reverse Voltage 2.0 V
Continuous Forward Current 50 mA
Peak Forward Current 3.0 A
Lead Soldering Temperature [1/16 inch (1.6 mm) from case for 5 seconds with soldering iron](1) 260° C
Power Dissipation(2) 100 mW
Notes:
1. RMA flux is recommended. Duration can be extended to 10 seconds maximum when flow soldering. A maximum of 20 grams force
may be applied to the leads when soldering.
2. Derate linearly 1.33 mW/° C above 25° C.
3. EE(APT) is a measurement of the average apertured radiant energy incident upon a sensing area 0.180” (4.57 mm) in diameter
perpendicular to and centered on the mechanical axis of the lens and 0.653” (6.60 mm) from the lens tip. EE(APT) is not necessarily
uniform within the measured area.
Electrical Characteristics (TA = 25°C unless otherwise noted)
SYMBOL PARAMETER MIN TYP MAX UNITS TEST CONDITIONS
Input Diode
EE (APT)
Apertured Radiant Incidence
OP140A, OP145A
OP140B, OP145B
OP140C, OP145C
OP140D, OP145D
0.40
0.30
0.20
0.10
-
-
-
-
-
0.55
0.40
-
mW/cm2 IF = 20 mA(3)
VF Forward Voltage - - 1.60 V IF = 20 mA
IR Reverse Current - - 100 µA VR= 2.0 V
λP Wavelength at Peak Emission - 935 - nm IF = 10 mA
B Spectral Bandwidth between Half Power
Points - 50 - nm IF = 10 mA
∆λP /∆T Spectral Shift with Temperature - ±0.30 - nm/°C IF = Constant
θHP Emission Angle at Half Power Points - 40 - Degree IF = 20 mA
tr Output Rise Time - 1000 - ns
tf Output Fall Time - 500 - ns
IF(PK)=100 mA, PW=10 µs, and
D.C.=10.0%
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
OPTEK Technology Inc. — 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com
Issue A 04/2012
Page 4 of 5
Plastic Infrared Emitting Diode
OP140, OP145 Series
OP140, OP145 (A, B, C, D)
Distance vs Output Power vs Forward Current
0
1
2
3
4
5
6
7
8
9
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
Distance (in che s)
Normalized Output Power
10 mA
20 mA
30 mA
40 mA
50 mA
60 mA
80 mA
100 mA
Normal ize d at 0.6" an d 50 mA
Forward Current
Forward Voltage vs Forward Current vs
Temperature
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
0 5 10 15 20 25 30 35 40 45
Forward Cu rren t (mA)
Typical Forward V ol tage (V)
-65°C
-40°C
-20°C
+0°C
+20°C
+40°C
+60°C
+80°C
+100°C
+125°C
Opt ic a l P ower vs I
F
vs Te mp
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
0 5 10 15 20 25 30 35 40 45 50
Forward Current I
F
(mA)
Normalized Optical Power
-65°C
-40°C
-20°C
+0°C
+20°C
+40°C
+60°C
+80°C
+100°C
+125°C
Norm a li z ed at 20 mA and 20
o
C
OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible.
OPTEK Technology Inc. — 1645 Wallace Drive, Carrollton, Texas 75006
Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com
Issue A 04/2012
Page 5 of 5
Plastic Infrared Emitting Diode
OP140, OP145 Series
‐
20.00
40.00
60.00
80.00
100.00
120.00
140.00
160.00
180.00
200.00
220.00
240.00
260.00
280.00
300.00
320.00
340.00
360.00
380.00
400.00
420.00
440.00
460.00
480.00
860 880 900 920 940 960 980 1000 1020 1040
NormalizedRelativeResponse
Wavelength
Spectral Response
